A 45-year-old obese male is in the ICU after an elective open lung biopsy. Which would provide the best prophylaxis against deep vein thrombosis?

A 45-year-old obese male is in the ICU after an elective open lung biopsy. Which would provide the best prophylaxis against deep vein thrombosis?

• A. Pneumatic compression boots
• B. Heparin 5000 units SQ every 8 hours
• C. Early ambulation
• D. Dextran 10 mL/kg IV during surgery

Answer: (C)

Preventing DVT relies on preventing venous blood from pooling in the legs. Ambulation activates the calf muscle pump, increases venous return, and reduces venous stasis, which is the main driver of clot formation after surgery. In this patient who recently had an open lung biopsy, moving around early after surgery minimizes the risk without adding bleeding risk. Anticoagulants like heparin can reduce clotting but raise the chance of postoperative bleeding at the biopsy site, and Dextran has more side effects and limited utility. Mechanical methods such as pneumatic compression help, but without early mobilization the protection is not as strong. So, encouraging early ambulation provides the best overall prophylaxis in this scenario.

Preventing DVT relies on preventing venous blood from pooling in the legs. Ambulation activates the calf muscle pump, increases venous return, and reduces venous stasis, which is the main driver of clot formation after surgery. In this patient who recently had an open lung biopsy, moving around early after surgery minimizes the risk without adding bleeding risk. Anticoagulants like heparin can reduce clotting but raise the chance of postoperative bleeding at the biopsy site, and Dextran has more side effects and limited utility. Mechanical methods such as pneumatic compression help, but without early mobilization the protection is not as strong. So, encouraging early ambulation provides the best overall prophylaxis in this scenario.